HT55CN271JC Equivalent & Substitute Parts

Part Overview

The HT55CN271JC is a 270 pF ceramic capacitor manufactured by KEMET, rated for 100V with C0G/NP0 temperature coefficient and radial through-hole mounting. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates across an extended temperature range of -55°C to 200°C, making it suitable for high-temperature industrial applications.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	270 pF	Critical - must match exactly
Voltage Rating	100V	Critical - must match or exceed
Tolerance	±5%	Critical - determines circuit performance
Temperature Coefficient	C0G/NP0	Critical - ensures stability across temperature range
Mounting Type	Through Hole Radial	Critical - determines PCB compatibility
Operating Temperature Range	-55°C to 200°C	Important - defines application suitability
Lead Spacing	0.200" (5.08mm)	Important - affects PCB footprint compatibility

Substitute Part Grouping Explanation

Substitution eligibility for the HT55CN271JC is determined by strict alignment with the following parameters:

Critical Matching Parameters:

Capacitance value: 270 pF (exact match required)
Voltage rating: 100V minimum
Tolerance: ±5%
Temperature coefficient: C0G/NP0 (ensures frequency and temperature stability)
Mounting configuration: Through-hole radial

Secondary Compatibility Factors:

Lead spacing and physical dimensions (affects PCB layout)
Operating temperature range (application-dependent)
Packaging format (Cut Tape, Bulk, Tape & Reel)

The identified substitute RCE5C2A271J0DBH03A meets all critical parameters. Physical dimension variations are acceptable provided the lead spacing accommodates existing PCB hole patterns or allows minor layout adjustment.

Parameter Comparison

Parameter	HT55CN271JC (KEMET)	RCE5C2A271J0DBH03A (Murata)	Match Status
Capacitance	270 pF	270 pF	Exact Match
Voltage Rating	100V	100V	Exact Match
Tolerance	±5%	±5%	Exact Match
Temperature Coefficient	C0G/NP0	C0G/NP0	Exact Match
Mounting Type	Through Hole Radial	Through Hole Radial	Exact Match
Operating Temperature Range	-55°C to 200°C	-55°C to 125°C	Partial - Murata rated to 125°C
Lead Spacing	0.200" (5.08mm)	0.098" (2.50mm)	Different - smaller pitch
Physical Size (L x W)	0.200" x 0.100" (5.08mm x 2.54mm)	0.142" x 0.098" (3.60mm x 2.50mm)	Different - Murata is more compact
Product Status	Obsolete	Active	Substitute is current production
Certifications	Not specified	AEC-Q200, ROHS3 Compliant	Murata has automotive qualification

Engineering Selection Recommendations

Primary Substitute: RCE5C2A271J0DBH03A (Murata Electronics)

This component satisfies all critical electrical parameters required for direct substitution. The part is in active production status, ensuring long-term availability and supply chain stability. Murata's RCE5C2A271J0DBH03A carries AEC-Q200 automotive qualification and ROHS3 compliance, providing additional quality assurance for regulated applications.

Design Considerations:

The Murata substitute exhibits a reduced operating temperature maximum of 125°C compared to the KEMET original's 200°C rating. Applications requiring sustained operation above 125°C require thermal analysis to confirm the substitute remains within acceptable operating limits.

The lead spacing difference (0.098" versus 0.200") necessitates PCB layout verification. The Murata part's more compact footprint may require minor hole pattern adjustment or use of adapter techniques if the original PCB layout cannot be modified.

Compliance Status:

Both components are classified under ECCN EAR99 and carry identical HTSUS codes (8532.24.0060 for KEMET, 8532.23.0060 for Murata), confirming regulatory equivalence for export and import purposes.

Frequently Asked Questions (FAQ)

Q: Can RCE5C2A271J0DBH03A be used as a direct drop-in replacement for HT55CN271JC?

A: Electrical substitution is valid. Physical substitution requires PCB layout verification due to different lead spacing (0.098" versus 0.200"). The smaller Murata footprint may require hole pattern modification or adapter mounting.

Q: What is the significance of the operating temperature range difference?

A: The KEMET original operates to 200°C; the Murata substitute to 125°C. For applications operating continuously above 125°C, thermal analysis is required to confirm the substitute remains within safe operating limits. For applications below 125°C, no thermal derating is necessary.

Q: Are the capacitance and voltage ratings identical?

A: Yes. Both components are rated 270 pF at 100V with ±5% tolerance and C0G/NP0 temperature coefficient. Electrical performance is equivalent within specified tolerances.

Q: What does AEC-Q200 certification indicate?

A: AEC-Q200 is an automotive qualification standard. The Murata part meets automotive-grade reliability and quality requirements. This certification is not present on the KEMET original but does not preclude use in non-automotive applications.

Q: Is ROHS3 compliance required for my application?

A: ROHS3 compliance is mandatory for products sold in the European Union and certain other regulated markets. The Murata substitute meets this requirement; the KEMET original status is not specified. Verify compliance requirements for your target market.

Q: Can I use the Murata part in high-temperature industrial applications?

A: The 125°C maximum rating of the Murata substitute may limit use in applications requiring sustained operation above this temperature. Confirm your application's actual operating temperature before selection.

Q: What is the inventory status of each part?

A: HT55CN271JC (KEMET): 881 pieces available. RCE5C2A271J0DBH03A (Murata): 986 pieces available. Both are in current stock as new original components.

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